Portland, OR, United States of America

Stormwater Management


USPTO Granted Patents = 1

Trademarks = 2

Forward Citations = 44

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2 inventors (with patents filed for the assignee):

goldMedal Scott A De Ridder (1 out of 2 patents)

silverMedal James H Lenhart, Jr (1 out of 7 patents)


1 patent:

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USPTO Data Jan 1 1976 - Dec 30 2025

1 Patents

#582 in Portland, OR

#1,686 in Oregon

#133,892 in US

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Portland, OR, United States of America
Forward Citations = 44

2 inventors:

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